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  "path": "/notes/2026-06-07-cc",
  "publishedAt": "2026-06-07T15:57:00.000Z",
  "site": "https://muan.co",
  "tags": [
    "Hobby",
    "Porcelain Marks and More",
    "actual patent registration",
    "Like",
    "(Backed by OpenHeart protocol)"
  ],
  "textContent": "Porcelain Marks and More - it is so nice to find a site like this in times like this.\n\nToday at flea markets I got a rusty caliper. I got it for €2, gave it a vinegar bath and cleaned it up. Now it is good as new.\n\nThen I looked up the year range for its D. R. P. number on that website, before I realized I can just find the actual patent registration from 1913.\n\n\nLike\n(Backed by OpenHeart protocol)",
  "title": "2026-06-07"
}